static void Main()
{
 int factor = 2;
 Func<int, int> multiplier = n => n * factor;
 Console.WriteLine (multiplier (3)); // 6
}

int factor = 2;
Func<int, int> multiplier = n => n * factor;
factor = 10;
Console.WriteLine (multiplier (3)); // 30

int seed = 0;
Func<int> natural = () => seed++;
Console.WriteLine (natural()); // 0
Console.WriteLine (natural()); // 1
Console.WriteLine (seed); // 2

static Func<int> Natural()
{
 int seed = 0;
 return () => seed++; // Returns a closure
}
static void Main()
{
 Func<int> theNatural = Natural();
 Console.WriteLine (theNatural ()); // 0
 Console.WriteLine (theNatural ()); // 1
}

static Func<int> Natural()
{
 return() => { int seed = 0; return seed++; };
}
static void Main()
{
 Func<int> natural = Natural();
 Console.WriteLine (natural()); // 0
 Console.WriteLine (natural()); // 0
}

Action[] actions = new Action[3];
for (int i = 0; i < 3; i++)
actions [i] = () => Console.Write (i);
foreach (Action a in actions) a(); // 333

Action[] actions = new Action[3];
int i = 0;
actions[0] = () => Console.Write (i);
i = 1;
actions[1] = () => Console.Write (i);
i = 2;
actions[2] = () => Console.Write (i);
i = 3;
foreach (Action a in actions) a(); // 333

Action[] actions = new Action[3];
for (int i = 0; i < 3; i++)
{
 int loopScopedi = i;
 actions [i] = () => Console.Write (loopScopedi);
}
foreach (Action a in actions) a(); // 012

int x = 3;
auto y = x;

int  sample()
  {
      int  result(0);
      // To Do ...
      return  result;
  }

int main()
 {
      auto  result =  sample();
      // To Do ...
      return 0;
 }

float  sample()
  {
      float  result(0.0);
      // To Do ...
      return  result;
  }

int main()
 {
      auto  result =  sample();
      // To Do ...
      return 0;
 }

FirstName

firstName

strFirstName
lblFirstName

<Company>.<Technology|Produt|Project>[.<Feature>][.<SubNamespace>]

Microsoft.Reporting.WebForms
Kara.Support.Manager.Enums
Kara.CSS.HQ.WebUI.Configuration

PackageManager , PacakgeConfigGenerator
Circle , Utility , Package

CreateConfig , classdata
CManager , ClsPackage , Config_Creator , Config1389

CenterCollection , PackageCollection

public delegate void Logger (string log);
public delegate void LoggingCallback (object sender, string reason);

AddEventArgs , EditEventArgs , DeleteEventArgs

Adding , Add , Added

public delegate void <EventName>EventHandler  (object sender, <EventName>EventArgs e);

public event EventHandler <AddEventArgs> Adding;

DisplayNameAttribute , MessageTypeAttribute

IComponent  (اسم)
IConnectionProvider (موصوف)
ICloneable (صفت)

public enum FileMode {
    Append,
    Read, …
}

[Flag]
public enum KeyModifiers {
    Alt = 1, 
    Control = 2,
    Shift = 4
}

public enum OperationState {
    DoneState, 
    FaultState,
    RollbackState
}

AddDays , Save , DeleteRow , BindData , Close , Open

Radius , ReportType , DataSource , Mode , CurrentCenterId

public CenterCollection Centers { get; set; }

if (list.Contains(item))
if (regularExpression.Matches(text))
if (stream.CanSeek)
if (context.Created)
if (form.Enabled)

if (list.IsContains(item))
if (regularExpression.Match(text))
if (stream.Seekable)
if (context.IsCreated)
if (form.IsEnabled)

public Color Color { get; set; }

firstName , e , id , packageId , centerName , name

public static MyType operator +(MyType left, MyType right)
public static bool operator ==(MyType left, MyType right)

public static MyType operator ++(MyType value)

public static MyType operator /(MyType dividend, MyType divisor)

public static MyType operator -(MyType d1, MyType d2) // incorrect!

Area , DataBinder , PublicCacheName

_centersList
_firstName
_currentCenter

parameterType , packageOperationTypeId

lblName (Label)
txtHeader (TextBox)
btnSave (Button)

ArgumentNullException , InvalidOperaionException

System.Data

<Company>.<Component>.dll
<Company>.<Project|Product|Technology>.<Component>.dll

Microsoft.CSharp.dll , Kara.CSS.Manager.dll

public int IComparer<T> {…}
public delegate bool Predicate<T> (T item)

public int ISessionChannel<TSession> {…}
public delegate TOutput Converter<TInput, TOutput> (TInput from)
public class Nullable<T> {…}
public class List<T> {…}

ArgumentExceptionIllegalCharacters
ArgumentExceptionInvalidName
ArgumentExceptionFileNotFound

public class Color {
    …
    public static Color FromArgb(…)
    { … }
}

<TextBox Name="txtName" />

<TextBox Text="{Binding Name}" />

using System.ComponentModel;

namespace SL5Tests
{
    public class MainPageModel : INotifyPropertyChanged
    {
        string _name;
        public string Name 
        {
            get { return _name; }
            set
            {
                if (_name == value) return;
                _name = value;
                raisePropertyChanged("Name");
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
        void raisePropertyChanged(string propertyName)
        {
            var handler = PropertyChanged;
            if (handler == null) return;
            handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}

namespace SL5Tests
{
    public class MainPageViewModel
    {
        public MainPageModel MainPageModelData { set; get; }
        public MainPageViewModel()
        {
            MainPageModelData = new MainPageModel();
            MainPageModelData.Name = "Test1";
        }
    }
}

<UserControl x:Class="SL5Tests.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:VM="clr-namespace:SL5Tests"
    mc:Ignorable="d" Language="fa"    
    d:DesignHeight="300" d:DesignWidth="400">
    <UserControl.Resources>
        <VM:MainPageViewModel x:Name="vmMainPageViewModel" />
    </UserControl.Resources>
    <Grid DataContext="{Binding Source={StaticResource vmMainPageViewModel}}"
          x:Name="LayoutRoot" 
          Background="White">
        <TextBox Text="{Binding 
                            MainPageModelData.Name, 
                            Mode=TwoWay, 
                            UpdateSourceTrigger=PropertyChanged}" />
    </Grid>
</UserControl>